--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Source/DataAccess/Direction.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,54 @@
+using System;
+
+namespace BLToolkit.DataAccess
+{
+	[AttributeUsage(AttributeTargets.Parameter), CLSCompliant(false)]
+	public abstract class Direction : Attribute
+	{
+		protected string[] _members;
+		public    string[]  Members
+		{
+			get { return _members;  }
+			set { _members = value; }
+		}
+
+		public class OutputAttribute : Direction
+		{
+			public OutputAttribute(params string[] members)
+			{
+				_members = members;
+			}
+		}
+
+		public class InputOutputAttribute : Direction
+		{
+			public InputOutputAttribute(params string[] members)
+			{
+				_members = members;
+			}
+		}
+
+		public class IgnoreAttribute : Direction
+		{
+			public IgnoreAttribute(params string[] members)
+			{
+				_members = members;
+			}
+		}
+
+		public class ReturnValueAttribute : Direction
+		{
+			protected string _member;
+			public    string  Member
+			{
+				get { return _member;  }
+				set { _member = value; }
+			}
+
+			public ReturnValueAttribute(string member)
+			{
+				_member = member;
+			}
+		}
+	}
+}